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M. GRISWOLD & 0. R. HANCHETT. STOVE PIPE DAMPER.

No. 405,408. Patented June 18; 1889 A F! e A w C, \m

U ITED STATES crav raise.

PATENT uA'rTnEw GR'IswoLD Ant) OREN R. HANCI'IETT, or ERIE, PENXSYLVANIA? SAID HANCHETT ASSIGNOR'TO SAID Gmswou).

STOVE-PIPE. DAMPER. 4

SPECIFICATION forming part of Letters Patent No. 405,408, dated June 18, 1889.

' Application filed January 29, 1889- semi No. 297,914. on model.

To all-107mm.- it may concern.-

Be'it known that W0, MATTHEW GRIswoLD and ORENR IIANCHETT, both citizens of the UnitedStates, and residents of Erie, county of Eric, and State ot' Pennsylvania, have iuvented a new and-useful Improvement in Stove-Pipe Dampers, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, making part of this specification;

()ur invention relates to the means for at- .taching the wooden block or handle to, the,

damper rod or spindle, whereby the labor and expense of making such connection are diminished; and it consists in providing the spindle with a sleeve or collar having a bit'nrcated end or arms adapted to stride and be clamped around the wooden block or spindle-handle; also in providing the end of the spindle with a rib or spur engaging a groove in the block or handle, and which when the handleisrclamped' to the spindle by .the

forked 'colla-r referred to takes-the strain from the latter and assists-in holding thehandle firmly engaged tothc spindle.

In the accompanying drawings, Figure 1 represents a section through a pipe with the damper in place therein, the latter being shown in plan or side elevation. ,Fig. i. is a side-elevation of the damper rod or spindle and its handle (the latterin sect-ion) removed from the damper, andFig. 3 shows in detail theparts of the damper rod or spindle.

A indicates the pipe, and B the damper in place therein.

' G .is the damper rod or spindle, which may be rectangular. or polygonal in form, engaging sockets of corresponding form, as shown in Fig. 1, and also as shown in Letters Patent No. 226,680, datedApril 20, 1880, or it may be made round and provided --with--spurs or projections c c, as shown in Fig. 2, toengage notches in the spindle-sockets, as shown in Letters Patent No. 188,418, dated March 13, 1877, as the manner of engaging the damper with the spindle forms no part of the present invention.

1) indicates a sleeve or ('ollnl', loose on the od saidend.

vc, crossing said end and entering spindle, and which is held in frictional an gagement with the pipe A, for holding the grn damper at'any desired adjustment by means ofaspringlhpressing at one end asaingta collar or aimular ribx" on the spindle, and at the other against the sleeve 1), as shown.

E is a short. sleeve of sufficient diameter 55 to pass over the collar '0' and to fit snugly at its inner end 7 on an enlargement dat the spindle outsideof collar and at the end oi. the spindle, and c is an. annular rib or collar formed on the end of the mlar'gemqnfl 6o 0 for preventing the sleeve Mm slipping The outer end efthe cave E is enlarged and. bifurcated or prov} with arms e c, whic :r-xtend outward byte! the collar to receive the handle 9? beck F, of '65 wood. orother suitable ttonmducflng material, between them. The meme and of the spindlothisprovided with a fiber spur trans; verse groove formed at f in one, s de of the block 0r handle 1*. The sleeve E, which,

with its arms a e, constitutes a, species efi yoke on the end of thespinctia isnnide from -malleable iron and east in and described,'or it. may bgsbmped from {was shown wrought sheet-iron or either suitable metal, and when applied to the spindle the block or handle is placed between the arms and engaged wit-h the ribs 0 the latter entering the groove f The outer ends of the arms a e are So bent inward toward eachothcr and are made to clamp the handle snnglybetween them, asshown-in Fig. 2. The rib 1- takes the torsional strain upon the handie in turning the damper and enables us to make the sleeve 0r yoke E Ofjlll'lfill lighter material than would otherwise be practieablc, thereby red ueing the cost of construction.

' The advantagesof the wooden handle, as applied to the. damper, are too well understood to require explanation.

Having now described our invention, we claim as new- The damper-spindle provided with the enlarged head or end to receive and retain the handle-sleeve'and having the transverse rib .01; its end for engaging thegroovedbl'dck or our hands this 25th day of January, A. D.

j handlgimcombin'ation with thefremqvabie 1889.; v -,s1eeve ,engag'ing said enlarged nd of the} MATTHEW GRISWOLD.

- spindle and having the'malleable' arms or' OREN R. HANCHETT. 5 fork forreceivingand clampingtheblock to Witnesses: v

the spindle, substantially-as described. Jos. BQBDOLBER,

" v "In testim'oliy whereqf we have hereunto set H. L. MCW' v,

I v r I v 

